Visual Studio 2017 comes bundled with a version of Chrome which integrates with the VS debugging tools. It’s enabled by default and can be quite useful. However as it’s not the same version of Chrome you may have installed on your machine, it doesn’t give access to your bookmarks, browser extensions etc.
This feature can be disabled:
1. Go to Tools > Options.
2. Select Debugging then General.
Next time you run your web application Visual Studio will use whichever version of Chrome/IE you have installed.